TS EAMCET · Physics · Rotational Motion
A rod of length \(l\) is held vertically stationary with its lower end located at a point \(P\), on the horizontal plane. When the rod is released to topple about \(P\), the velocity of the upper end of the rod with which it hits the ground is
- A \(\sqrt{\frac{g}{l}}\)
- B \(\sqrt{3 g l}\)
- C \(3 \sqrt{\frac{g}{l}}\)
- D \(\sqrt{\frac{3 g}{l}}\)
Answer & Solution
Correct Answer
(B) \(\sqrt{3 g l}\)
Step-by-step Solution
Detailed explanation
In this process potential energy of the metre stick will be converted into rotational kinetic energy. PE of metre stick \(=\frac{m g l}{2}\) Because its centre of gravity lies at the middle of the rod. Rotational kinetic energy \(E=\frac{1}{2} I \omega^2\) \(I=\) moment of…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- For which of the following Reynold's number, a flow is streamlined?TS EAMCET 2025 Easy
- The resistance in following circuit are The emf of the battery is volts. When switch is closed, the potential across resistance is changed by an amount.
TS EAMCET 2020 Easy - Four identical metal plates are located in air at equal distance \(d\) from each other. The area of each plate is \(S\). If the outer most plates are connected by a conducting wire as shown in the figure the capacitance between points \(A\) and \(B\) will be
TS EAMCET 2019 Easy - Four identical particles each of mass ' \(m\) ' are kept at the four comers of a square of side ' \(a\) '. If one of the particles is removed, the shift in the position of the centre of mass isTS EAMCET 2024 Medium
- The velocity \(v\) reached by a car of mass \(m\) at certain distance from the starting point driven with constant power \(P\) is such thatTS EAMCET 2012 Easy
- A body is projected vertically upwards at time \(t=0\) and it is seen at a height \(H\) at time \(t_1\) and \(t_2\) second during its flight. The maximum height attained is ( \(g\) is acceleration due to gravity)TS EAMCET 2009 Hard
More PYQs from TS EAMCET
- A thin hollow sphere of mass \(m\) is completely filled with a liquid of mass \(m\). When the sphere rolls with a velocity \(v\), kinetic energy of the system is (neglect friction)TS EAMCET 2011 Easy
- A particle of mass \(m_1\) moving along the \(X\)-axis collides with a stationary particle of mass \(m_2\) and deviates by an angle \(30^{\circ}\) to the \(X\)-axis as shown in the figure. If the percentage change in kinetic energy of the combined system of these two particles reduces by \(50 \%\), then the ratio of the masses \(\frac{m_2}{m_1}\) is
TS EAMCET 2018 Medium - Due to the presence of air resistance, if a body dropped from a height of 20 m reaches the ground with a speed of \(18 \mathrm{~ms}^{-1}\), then the time taken by the body to reach the ground is nearlyTS EAMCET 2025 Medium
- The deceleration of a car traveling on a straight highway is a function of its instantaneous velocity \(v\) given by \(\omega=a \sqrt{v}\), where \(a\) is a constant. If the initial velocity of the car is \(60 \mathrm{~km} / \mathrm{h}\), the distance of the car will travel and the time it takes before it stops areTS EAMCET 2017 Medium
- Find the equivalent capacitance between point .
TS EAMCET 2020 Medium - The angle between force \(\vec{F}=3 \hat{i}+4 \hat{j}-5 \hat{k}\) and displacement \(\vec{d}=5 \hat{i}+4 \hat{j}+3 \hat{k}\) isTS EAMCET 2023 Medium